43 Septic System Installation Checklist 2011 SGPc /YJ/ 242. 6
Commonwealth of Massachusetts
City/Town of
Septic System Installation Checklist
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B. Application Checklist (cont.)
2. Construction Inspection
a) Building Sewer(310 CMR 15 222)
All waste pipes tied into building sewer
Schedule 40 PVC 4°or cast iron
Minimum slope of 0.01-0.02
Pipe laid in continuous straight line
Pipe laid on compact,firm base
Cleanouts precede all changes in
alignment/grade
Cleanout provided every 100 ft.
Backfill material dean
b) Septic Tank(310 CMR 15.223)
Tank is set level with 6°stone under
(15 228)
Tank is required size/loading per plan
Inlet and outlet are at proper location
(15.227)
Tank is water tight(15.226)
Outlet tees extend 6" above flow line
Basement check
Verify by reading pipe
Visual
Visual
Visual
Verify by visual/tape
Verify by visual/tape
Visual
Check with level
Verify with plan
Verify with plan
Test
Verify by visualttape
Approved filter device placed at outlet DEP list
Gas baffle installed at outlet tee Visual
Inlet and outlet tees on center line Visual
Tank is backfilled with acceptable material Visual
Notes:
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Approved N/A Problem
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Approved N/A Problem
07 ❑ ❑
II ❑ ❑
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Er ❑ ❑
V ❑ ❑
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eptic System Installation Checklist 11-09.doc•date
Form Name•Page 2 of 6
Commonwealth of Massachusetts
City/Town of
Septic System Installation Checklist
B. Application Checklist(cont.)
c) Distribution Box(310 CMR 15.232)
All outlet pipes at same elevation
a
per plan
Inlet tee min. 1"over outlet
D box set on level base
Top of D box 36" max depth
D box is water-tight
D box has a minimum of 2"thick wall and
12° inside dimension
d) Pump Chamber(310 CMR 15.231)
Number of outlets
Check by adding water
Number of laterals
Visual and wftape
Visual
Visual and w/tape
Add water
Tank is set level
Proper volume is provided
Float elevations set per plan
Min. 2"delivery line to D box
Number of pumps.
Specified pump provided or designers
approval for equal pump
Correct pump sequence
Covers set to grade
Electrical permit provided
6° of stone beneath chamber
Chamber is water-tight
Min. 9" cover provided
Correct loading provided per plan
Notes:
Visual and w/level
Check plan and tank
Measure w/tape
Visual
Visual
Test
Visual
Visual on tank
Approved N/A Problem
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7
per plan
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L7 ❑ ❑
Approved N/A / Problem
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iptic System Installation Checklist 11-09.doc•data
Form Name•Page 3 of 6
Commonwealth of Massachusetts
j I�fT City/Town of
Septic System Installation Checklist
B. Application Checklist (cont)
e) Leaching Facility(310 CMR 15.240)
No frozen material used including back fill Visual
No clay, tailings or stones larger than 6°for
cover material
Soil at bottom/sides of excavation matches
info on deep holes
All impervious layers removed Visual
No remaining NB horizons Visual
Groundwater conditions match plan and
deep holes
Vented if under impervious cover per plan
(15.241)
Vent is protected from precipitation
and animal entry
Cover of a minimum of 9°over leach area
Pipe slope equal to 0.005.
Leach area per design(15.241)
Excavation is level and at required depth
Removal of 5 ft material and replacement
(if in fill)
Back fill material is acceptable
Final contours correct per plan
Surface/subsurface drainage away from
leach area
Final grade and side slopes are stable
Distribution lines are capped, vented, or
connected together
Impermeable barrier(15.255[2])
Retaining wall inspected by PE
Retaining wall is water-proofed
Retaining wall/banier is at correct
depth/height
Visual/check plan
Check w/transit
Visual/check plan
Visual/check plan
Visual
Check with plan
Approved N/A Problem
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otic System Installation Checklist 11-09.doc•date Form Name•Page 4 of 6
Commonwealth of Massachusetts
City/Town of
Septic System Installation Checklist
B. Application Checklist(cont) //
f) Leaching trenches(310 CMR 15251) Ala Approved NIA Problem
Number of trenches: ❑ ❑ ❑
Depth of trenches: ❑ ❑ ❑
Width of trenches: ❑ ❑ ❑
Trench spacing per plan ❑ ❑ ❑
Stone is double-washed[3/4"to 1Y21 (15.247) ❑ ❑ ❑
g) Leaching fields(310 CMR 15.242)
Length of field: v N
6 W ^ /J^ t ❑ ❑ ❑
Width of field: ❑ i ❑ ❑
Min. of 2 distribution lines ❑ ❑
Separation distance conforms to plan �j ❑ ❑
Stone is double-washed[3/4"to 11/2"](1//5.247) [�/ ❑
h) Leaching Pits(310 CMR 15.253) e('IG",.r✓/d et5
Number of pits: �yV ❑ ❑
Depth of pits: ❑ ❑
Stone is double-washed[3/4"to 1W](15247) El' ❑ ❑
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Each pit has min. 1 20•access cover ❑ ❑
Piping network and configuration of ❑ ❑
pits/chambers per plan
i) Tight Tank(310 CMR 15.260) Ai A
Tank is set level with 6"stone under Visual and with level ❑ ❑ ❑
Tank is proper size per plan Visual with plan ❑ ❑ ❑
Pumping contract has been provided ❑ ❑ ❑
Covers to grade Visual ❑ ❑ ❑
AN alarm set at 3/5 tank capacity Check floats by raising ❑ ❑ ❑
AN alarm test on separate circuit Set off alarm ❑ ❑ ❑
ptic System Installation Checklist 11-09.doc•date Form Name•Page 5 of 6
Commonwealth of Massachusetts
City/Town of
Septic System Installation Checklist
B. Application Checklist(cont)
j) Certificate of Compliance(310 CMR 15.021)
As Built Plan Submitted
Signed by Installer
Signed by Designer
Certificate of Compliance Issued
Notes:
Date
�a ?& air/
Date
Date
Date
ptic System Installation Checklist 11-69.doc•date
Form Name•Page 6 of 6